President Donald Trump might be the commander in chief, but two National Guard soldiers vowed to refuse to follow his orders if they conflict with the law and the Constitution. Two Illinois National Guard members told CBS News that they want no part of deploying to Chicago to help deport

It could give President Trump permission to send the National Guard nationwide to support federal law enforcement.

The conflicts over President Donald Trump’s deployment of National Guard troops to Illinois and Oregon hinge on a question as old as the Constitution itself: Where does federal power end and state authority begin?

As Congress drafts the next National Defense Authorization Act, lawmakers are weighing how far to expand the National Guard’s authority in cyberspace and communications resilience.

The deployment of National Guard troops on the streets of Washington faces challenges in two courts on Friday — one in the nation’s capital and another in West Virginia — while across the country a judge in Portland, Oregon, will consider whether to let President Donald Trump deploy troops there.

Over the objections of local and state officials, armed National Guards members are now appearing in places civilians frequent. They are walking down pedestrian streets in Washington, D.C., and they have patrolled outside the Immigration and Customs Enforcement office in Los Angeles and outside a Memphis landmark.

Illinois and Chicago have sued the Trump administration to block deployment of the National Guard to Chicago, though it was revealed in court that troops are already on the way.

As court rulings shift “hour by hour,” experts say city officials must build a united front with law enforcement, businesses and communities — before troops arrive.

As courts grapple with President Donald Trump's attempt to deploy the National Guard in Chicago, he could invoke a 218-year-old law to send in troops.

A Washington, D.C., man has filed a lawsuit against an Ohio National Guard member and local police, alleging he was detained for recording guardsmen in the nation’s capital while playing the villain’s theme from “Star Wars.